J/ApJ/809/L19ivo://CDS.VizieR/J/ApJ/809/L19doi:10.26093/cds/vizier.18099019CDSBenko J.M.Szabo R.2017-01-23T22:00:00Z2016-01-14T16:09:18ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frvariable-starsphotometryRecent photometric space missions, such as CoRoT and Kepler, revealed that many RR Lyrae stars pulsate --beyond their main radial pulsation mode-- in low-amplitude modes. Space data seem to indicate a clear trend that, namely, overtone (RRc) stars and modulated fundamental (RRab) RR Lyrae stars ubiquitously show additional modes, while non-Blazhko RRab stars never do. Two Kepler stars (V350Lyr and KIC7021124), however, apparently seemed to break this rule: they were classified as non-Blazhko RRab stars showing additional modes. We processed Kepler pixel photometric data of these stars. We detected a small amplitude (but significant) Blazhko effect for both stars by using the resulting light curves and O-C diagrams. This finding strengthens the apparent connection between the Blazhko effect and the excitation of additional modes. In addition, it yields a potential tool for detecting Blazhko stars through the additional frequency patterns, even if we have only short but accurate time series observations. V350 Lyr shows the smallest amplitude multiperiodic Blazhko effect ever detected.2015ApJ...809L..19Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/809/L19CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)J/ApJS/219/25 : LCs of RR Lyrae stars in M3 (NGC5272) (Jurcsik+, 2015)J/A+A/570/A100 : BVRc light curves of 5 CoRoT RR Lyrae stars (Szabo+, 2014)J/A+A/562/A90 : Times of maximum light of Blazhko RRab stars (Skarka, 2014)J/ApJS/213/31 : Blazhko effect from 4yr of Kepler data (Benko+, 2014)J/ApJS/211/2 : Revised properties of Q1-16 Kepler targets (Huber+, 2014)J/AJ/144/24 : The Kepler-INT survey (Greiss+, 2012)J/A+A/529/A89 : Kepler satellite variability study (Debosscher+, 2011)J/AcA/61/1 : VI light curves of Galactic Bulge RR Lyrae (Soszynski+, 2011)J/A+A/510/A39 : CoRoT light curves of V1127 Aql (Chadid+, 2010)http://archive.stsci.edu/kepler/ : MAST Kepler home pagehttp://www.konkoly.hu/KIK/data.html : Kepler & K2 RR Lyrae light curveshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/809/L19https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/809/L19http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/809/L19https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/809/L19https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/809/L19http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/809/L19GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/809/L19/table1Rectified data file of V350 LyrrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/4573] Serial numbermeta.id;meta.mainintBJD[131.5/1591.1] Barycentric Julian Date; BJD-2454833.0dtime.epochdoubleSFlux[2786/25797] Flux summed up in a tailor-made aperture; e^-^/sct/sphot.countfloatZPOZero point offset; e^-^/sct/sphot.mag;arith.zpdoubleScl[0.88/1.08] Scaling factor; 1.0 = no scalingarith.factorfloatCFlux[4363/19538] Shifted, scaled & detrended flux; e^-^/sct/sphot.countdoubleKpmag[-0.7/0.5] The CFlux value in Kepler magnitude scalemagphot.flux;arith.ratiodoubleJ/ApJ/809/L19/table2Rectified data file of KIC 7021124recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/4573] Serial numbermeta.id;meta.mainintBJD[131.5/1591.1] Barycentric Julian Date; BJD-2454833.0dtime.epochdoubleSFlux[2786/25797] Flux summed up in a tailor-made aperture; e^-^/sct/sphot.countfloatZPOZero point offset; e^-^/sct/sphot.mag;arith.zpdoubleScl[0.88/1.08] Scaling factor; 1.0 = no scalingarith.factorfloatCFlux[4363/19538] Shifted, scaled & detrended flux; e^-^/sct/sphot.countdoubleKpmag[-0.7/0.5] The CFlux value in Kepler magnitude scalemagphot.flux;arith.ratiodouble